CN207445651U - Prepare the crystallization apparatus of the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon - Google Patents
Prepare the crystallization apparatus of the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon Download PDFInfo
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- CN207445651U CN207445651U CN201721275312.9U CN201721275312U CN207445651U CN 207445651 U CN207445651 U CN 207445651U CN 201721275312 U CN201721275312 U CN 201721275312U CN 207445651 U CN207445651 U CN 207445651U
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- crystallizer
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- curing
- aromatic hydrocarbon
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Abstract
The utility model is related to prepare the device of C+10 heavy aromatic hydrocarbon aromatic solvent, a kind of crystallization apparatus for preparing the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon is provided, including crystallizer shell, crystallizer, tube sheet, curing section, Recycling Mother Solution pump and mixer；Tube sheet is located in crystallizer shell, it is cooling section between adjacent two pieces of tube sheets, crystallizer passes through tube sheet, its upper and lower ends is connected with first piece of tube sheet and last block tube sheet, curing section is arranged on the lower part of crystallizer shell, the top of crystallizer shell enters equipped with crystallized stock, the bottom for curing section is exported equipped with Curing material, cooling section has cooling medium inlet and cooling media outlet, mixer is arranged on crystallized stock entrance, Curing material outlet is connected by pipeline with the circulation fluid entrance that Recycling Mother Solution pumps, Recycling Mother Solution pumping hole is connected by pipeline with the material inlet of mixer, the utility model may be such that the content of the naphthalene in product is significantly less than company standard, good environmental protection, solvent content can be used as to substitute dimethylbenzene.
Description
Technical field
The utility model is related to prepare the device of C+10 heavy aromatic hydrocarbon aromatic solvent.
Background technology
The industries such as low naphthalene, coating, silver paste, the medicine that various low naphthalene contents are widely used in without naphthalene high boiling aromatic hydrocarbon solvent,
Available for advanced baking vanish solvent, insecticide emulsion and rubber resin solvent, as environmental requirement is more and more stringenter, no naphthalene, low naphthalene are high
Naphthalene content in boiling point aromatic solvent be also required to it is more and more lower, however in the prior art, the life of low naphthalene high boiling aromatic hydrocarbon solvent
Production. art is excessively complicated, and including rectifying and crystallization process, naphthalene content is high in the aromatic solvent produced, even if passing through a system
The low aromatic solvent of naphthalene content can not be still obtained after row complicated technology, production cost is high.
Utility model content
The purpose of this utility model is to provide a kind of crystallization apparatus for preparing the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon, to overcome
Defect existing in the prior art.
The crystallization apparatus for preparing the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon, including columnar crystallizer shell, crystallization
Pipe, tube sheet, curing section, Recycling Mother Solution pump and mixer；
The tube sheet is arranged in the crystallizer shell, and outer rim and the inner wall sealing of the crystallizer shell connect
It connects, is cooling section between adjacent two pieces of tube sheets, the crystallizer passes through the tube sheet, upper and lower ends and first piece of tube sheet
It is fixedly connected with last block tube sheet；
The curing section is arranged on the lower part of the crystallizer shell；
The top of the crystallizer shell enters equipped with crystallized stock, and the bottom for curing section is exported equipped with Curing material；
The cooling section is respectively equipped with cooling medium inlet and cooling media outlet；
The mixer is arranged on crystallized stock inlet；
The Curing material outlet is connected by pipeline with the circulation fluid entrance that the Recycling Mother Solution pumps, Recycling Mother Solution
The circulation fluid outlet of pump is connected by pipeline with the material inlet of the mixer and medial launder respectively；
Compared with prior art, the beneficial effects of the utility model are：
Using the crystallization apparatus of the utility model, the naphthalene in raw material can be efficiently separated out so that naphthalene in product contains
Amount is significantly less than company standard, environmentally safe, good environmental protection, solvent content can be used as to substitute dimethylbenzene.
Description of the drawings
Fig. 1 is mold structure schematic diagram.
Fig. 2 is mixer structure schematic diagram.
Specific embodiment
Referring to Fig. 1, the crystallization apparatus for preparing the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon, including：Columnar crystallizer
Shell 1, crystallizer 2, tube sheet 3, curing section 4, Recycling Mother Solution pump 5 and mixer 6；
The tube sheet 2 is arranged in the crystallizer shell 1, outer rim and the inner wall sealing of the crystallizer shell
It connects, is cooling section 7 between adjacent two pieces of tube sheets, the crystallizer 2 passes through the tube sheet 3, upper and lower ends and first
Block tube sheet is fixedly connected with last block tube sheet；
The curing section 4 is arranged on the lower part of the crystallizer shell 1；
The top of the crystallizer shell 1 is equipped with crystallized stock entrance 8, and the bottom for curing section 4 is exported equipped with Curing material
9；
The cooling section 7 is respectively equipped with cooling medium inlet 10 and cooling media outlet 11；
The mixer 6 is arranged at crystallized stock entrance 8；
The Curing material outlet 8 is connected by pipeline with the circulation fluid entrance of the Recycling Mother Solution pump 5, and mother liquor follows
The circulation fluid outlet of ring pump 5 is connected by pipeline with the cycle stock entrance 601 of the mixer 6 and medial launder respectively；
Preferably, crystallizer internal cavity is equipped with 5 ~ 8 cooling sections 7；
Preferably, the height of the curing section 4 is the 20 ~ 30% of crystallizer total height；
Referring to Fig. 2, it is preferred that the mixer 6 includes the mixer main body 602 equipped with hollow cavity, cycle stock enters
Mouth 601, material outlet 603 and material inlet 604, the cycle stock entrance 601, material inlet 604 and material outlet 603 divide
It is not connected with the hollow inner cavity, the material outlet 603 is connected with the crystallized stock entrance 8 of the crystallizer
It is logical.
The utility model so operates：
The low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon containing naphthalene that rectifying is obtained, by the material inlet 601 of mixer 6 with coming from
Recycling Mother Solution pumps the premixing of 6 circulating mother liquors, subsequently into crystallizer, is gone downstream by crystallizer, is cooled down and tied by cooling section
Crystalline substance, into curing section 24 so that crystal cures；
The temperature of the last one cooling section 23 is -23 ~ -28 DEG C, preferably -25 ~ -26 DEG C；
From top to down, the temperature difference of each cooling section 23 is uniformly distributed；
Step（1）Product residence time in a crystallizer be 15 ~ 30 minutes, the linear velocity in crystallizer 21 for 1 ~
5 meters, preferably 1 ~ 3 meter；
The weight of circulating mother liquor is step（1）Product 2 ~ 5%；
Since in circulating mother liquor, containing crystal, crystal seed can be used as, with step（1）Product premixing, knot can be improved
Brilliant efficiency；
Term " the low naphthalene aromatic solvent of heavy aromatics " is in company standard：Hualun Chemical Co., Ltd., Jiangsu's company standard, Q/
There is detailed definition in 321088GYF001-2016.
Claims (4)
1. prepare the crystallization apparatus of the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon, which is characterized in that including columnar crystallizer shell
（1）, crystallizer（2）, tube sheet（3）, curing section（4）, Recycling Mother Solution pump（5）And mixer（6）；
The tube sheet is arranged in the crystallizer shell, and outer rim is connected with the inner wall sealing of the crystallizer shell,
It is cooling section between adjacent two pieces of tube sheets（7）, the crystallizer is through the tube sheet, upper and lower ends and first piece of tube sheet
It is fixedly connected with last block tube sheet；
The curing section is arranged on the lower part of the crystallizer shell；
The top of the crystallizer shell is equipped with crystallized stock entrance（8）, the bottom for curing section is exported equipped with Curing material（9）；
The cooling section is respectively equipped with cooling medium inlet（10）With cooling media outlet（11）；
The mixer is arranged on crystallized stock inlet；
The Curing material outlet is connected by pipeline with the circulation fluid entrance that the Recycling Mother Solution pumps, Recycling Mother Solution pump
Circulation fluid outlet is connected by pipeline with the cycle stock entrance and medial launder of the mixer respectively.
2. the crystallization apparatus according to claim 1 for preparing the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon, which is characterized in that crystallization
Device inner cavity is equipped with 5 ~ 8 cooling sections（7）.
3. the crystallization apparatus according to claim 1 for preparing the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon, which is characterized in that described
Curing section height be crystallizer total height 20 ~ 30%.
4. the crystallization apparatus for preparing the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon according to claim 1,2 or 3, feature exist
In the mixer includes the mixer main body equipped with hollow cavity（602）, cycle stock entrance（601）, material outlet
（603）And material inlet（604）, cycle stock entrance, material inlet and the material outlet respectively with it is described it is hollow in
Chamber is connected, and the material outlet is connected with the crystallized stock entrance of the crystallizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721275312.9U CN207445651U (en) | 2017-09-30 | 2017-09-30 | Prepare the crystallization apparatus of the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721275312.9U CN207445651U (en) | 2017-09-30 | 2017-09-30 | Prepare the crystallization apparatus of the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207445651U true CN207445651U (en) | 2018-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721275312.9U Active CN207445651U (en) | 2017-09-30 | 2017-09-30 | Prepare the crystallization apparatus of the low naphthalene aromatic solvent of C+10 heavy aromatic hydrocarbon |
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| CN (1) | CN207445651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020061977A1 (en) * | 2018-09-28 | 2020-04-02 | 鹏辰新材料科技股份有限公司 | System for purifying aromatic solvent oil |
-
2017
- 2017-09-30 CN CN201721275312.9U patent/CN207445651U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020061977A1 (en) * | 2018-09-28 | 2020-04-02 | 鹏辰新材料科技股份有限公司 | System for purifying aromatic solvent oil |
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